1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
mod block;
use base_db::{fixture::WithFixture, SourceDatabase};
use expect_test::Expect;
use crate::{test_db::TestDB, ModuleDefId};
use super::*;
fn lower(ra_fixture: &str) -> Arc<Body> {
let db = crate::test_db::TestDB::with_files(ra_fixture);
let krate = db.crate_graph().iter().next().unwrap();
let def_map = db.crate_def_map(krate);
let mut fn_def = None;
'outer: for (_, module) in def_map.modules() {
for decl in module.scope.declarations() {
match decl {
ModuleDefId::FunctionId(it) => {
fn_def = Some(it);
break 'outer;
}
_ => {}
}
}
}
db.body(fn_def.unwrap().into())
}
fn check_diagnostics(ra_fixture: &str) {
let db: TestDB = TestDB::with_files(ra_fixture);
db.check_diagnostics();
}
fn block_def_map_at(ra_fixture: &str) -> String {
let (db, position) = crate::test_db::TestDB::with_position(ra_fixture);
let module = db.module_at_position(position);
module.def_map(&db).dump(&db)
}
fn check_at(ra_fixture: &str, expect: Expect) {
let actual = block_def_map_at(ra_fixture);
expect.assert_eq(&actual);
}
#[test]
fn your_stack_belongs_to_me() {
cov_mark::check!(your_stack_belongs_to_me);
lower(
"
macro_rules! n_nuple {
($e:tt) => ();
($($rest:tt)*) => {{
(n_nuple!($($rest)*)None,)
}};
}
fn main() { n_nuple!(1,2,3); }
",
);
}
#[test]
fn macro_resolve() {
// Regression test for a path resolution bug introduced with inner item handling.
lower(
r"
macro_rules! vec {
() => { () };
($elem:expr; $n:expr) => { () };
($($x:expr),+ $(,)?) => { () };
}
mod m {
fn outer() {
let _ = vec![FileSet::default(); self.len()];
}
}
",
);
}
#[test]
fn cfg_diagnostics() {
check_diagnostics(
r"
fn f() {
// The three g̶e̶n̶d̶e̶r̶s̶ statements:
#[cfg(a)] fn f() {} // Item statement
//^^^^^^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
#[cfg(a)] {} // Expression statement
//^^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
#[cfg(a)] let x = 0; // let statement
//^^^^^^^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
abc(#[cfg(a)] 0);
//^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
let x = Struct {
#[cfg(a)] f: 0,
//^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
};
match () {
() => (),
#[cfg(a)] () => (),
//^^^^^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
}
#[cfg(a)] 0 // Trailing expression of block
//^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
}
",
);
}
#[test]
fn macro_diag_builtin() {
check_diagnostics(
r#"
#[rustc_builtin_macro]
macro_rules! env {}
#[rustc_builtin_macro]
macro_rules! include {}
#[rustc_builtin_macro]
macro_rules! compile_error {}
#[rustc_builtin_macro]
macro_rules! format_args {
() => {}
}
fn f() {
// Test a handful of built-in (eager) macros:
include!(invalid);
//^^^^^^^^^^^^^^^^^ could not convert tokens
include!("does not exist");
//^^^^^^^^^^^^^^^^^^^^^^^^^^ could not convert tokens
env!(invalid);
//^^^^^^^^^^^^^ could not convert tokens
env!("OUT_DIR");
//^^^^^^^^^^^^^^^ `OUT_DIR` not set, enable "load out dirs from check" to fix
compile_error!("compile_error works");
//^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ compile_error works
// Lazy:
format_args!();
//^^^^^^^^^^^^^^ no rule matches input tokens
}
"#,
);
}
#[test]
fn macro_rules_diag() {
check_diagnostics(
r#"
macro_rules! m {
() => {};
}
fn f() {
m!();
m!(hi);
//^^^^^^ leftover tokens
}
"#,
);
}
#[test]
fn dollar_crate_in_builtin_macro() {
check_diagnostics(
r#"
#[macro_export]
#[rustc_builtin_macro]
macro_rules! format_args {}
#[macro_export]
macro_rules! arg {
() => {}
}
#[macro_export]
macro_rules! outer {
() => {
$crate::format_args!( "", $crate::arg!(1) )
};
}
fn f() {
outer!();
//^^^^^^^^ leftover tokens
}
"#,
)
}
|
